lab 5 - Conservation of Energy 1 Make free-body diagrams of...

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Conservation of Energy 1. Make free-body diagrams of a mass oscillating up and down on the end of a spring for three situations. Label the forces using mg and ky, the spring force. Also indicate if the situation could correspond to the top, middle, or bottom of the oscillation. It is useful to use arrows for each force which will represent the size of the force at that point in the oscillation of the spring. 2. If the zero for the potentials is the position of the mass when the spring is unstretched, write the gravitational and spring potentials and kinetic energies for the top, middle, and bottom positions when the mass is oscillating around its equilibrium position using m, g, y t , y m , y b , v m , and k. The subscripts refer to the top, middle, and bottom of the oscillation. 3. Use the information above to write the total mechanical energy for each situation. WPI Physics Department 1 PH 1110 2014-15 Name and section number: Emily Stratton Partner’s name and section number: Joshua Boynton Top: U g =m*g* y t Middle: U g
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